From Quartz, this report on DARPA (Defense Advanced Projects Research Agency) funding of blockchain. It is worth noting that contrary to most failed government technology development programs, DARPA originally funded the Internet, self driving cars and yes, Facebook.
The Constructal Law provides an arrow of evolution for all energetic flow systems. Constructal infonomics applies these principles to the flows of information-energy which in turn direct and control the flows of physical systems, including nuclear weapons.
“Blockchain technology has been slow to gain adoption in non-financial contexts, but it could turn out to have invaluable military applications. DARPA, the storied research unit of the US Department of Defense, is currently funding efforts to find out if blockchains could help secure highly sensitive data, with potential applications for everything from nuclear weapons to military satellites.”